FREEDMAN, R. e. (1964). Population: The vita revolution. Anchor Books.
Cita Chicago (17th ed.)FREEDMAN, Ronald ed. Population: The Vita Revolution. New York: Anchor Books, 1964.
Cita MLA (9th ed.)FREEDMAN, Ronald ed. Population: The Vita Revolution. Anchor Books, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.